Drawing instrument



W. H. SCHNEIDER Dec. 4, 1945.

DRAWING INSTRUMENT 2 Sheets-Sheet 1 Filed latch 29. 1941 rh u E N w o W M H H m m DRAWING INSTRUMENT Filed March 29. 1941 2 Sheets-Sheet 2 mmmzjlhnmmll y 'INVENTOR ML75/ HAR/FY SCHNEIDER l ATTORNEY Patented Dec. 4, 1945 iinAwiNGiNsrnnMnN'r y1 t weite; Harry schneider, Ridgefieldn. assign; or to -Keuffel` & Esser Company, Hoboken, N.

incorporation of New Jersey ApplicationMarch t9, 1941, serial NoaStiglitz.V

` ooiai'ms.` (Cisa-7c) I l n as' `to permit the free movement ofthe straight `"1 his"invention relates to straight-edges ofthe kind used bydraftsmen in the `drawing` of straight linesfimii to'guides or positioning instrumentalities for other drawing and lettering devices by which lines, lettering `and the likemay be made. More particularlm the invention relates Vto a straight edge which mayl be removably fixed in position at any inclinationon a drawing `surface and removed therefrom without damage tothe drawing surface to whichjit is attached.

It has heretofore "been proposed to removably fix a straight `edge on la drawing surface by means oi jnormally tacky material,` such as so-called drafting tape, `but such `prior attempts have proposed that portions vof the tape be positioned be neaththe bottom `surface of the straight edge with the adhesive surfaceon the bottom surface of the tape and in contact with the drawing surface. `Such construction `has been disadvanta geous, however, since the tape portions beneath thefstraght edge raised the straight edge up off the `drawing"surface and, in some situationsy rendered nthe correct or exact positioning` of very moved from one positionto another by sliding` nne lines therewith difncult because ho suidingi edge directly incontact with the drawing surface was presented. Such Va. straight edge., more--- over'i could not be readily used as an ordinarii straight edge because it could not be readily it over the drawing surface, this because or the adhesive `tape `surface on the lower surface of the straight edgei lsuch a member could only be movedfby ilrst H exerting e. lifting action to disen-V 'gage the adhesive material and `then tilting it transversely to lift the adhesive `from contact with the surface thereunder and requiredthat themember slide over the surface. on one `edge. Such manipulation is awkward and notin accord with the method of moving a straight edge over l. drawing surface to which a. draftsman is accustomed. Furthermore, the entire surface of -drawingvsurface i y Another object of the invention is o straight edge of the character `described in which the fasdeyicespmay be rendered so inoperative edge member over the drawing "surface Without hindrance and without requiring detahmentfbf the adhesive instrumentalities from the member.

n carrying these aspectsof the inventionintl effect, in its preferred embodiment,` the `straight edge of this invention preferably comprisesrel rec tangula'r member of any desired rcomposition and which `may or may notbe transparent;` Such straight edge is provided, near eachfend, :with a slot extending transversely of the 4longer axis of the instrument. @conveniently this slot is provided hy Ameans o'fan end plate' which may either befoimed with a slot or which forms, with the end of the Vstraight edge, the .sides of I. slot. A

'strip of iieiiible material, having a normally Y tacky or adhesive :surface on one side thereof, is secured at one end to the upper` surface of .the straight edge member and Vliasses through the slot to extend therefrolii in the axial .direction away 'from theend of the member and.. be adhered to the drawing surface, Conveniently Athe slot, or the wall forming` one sideof the slot, is spaced from or terminates above the plane'of'the bottom surface of the straight edge .member `a. distance suiiicientY to permit the passate therebeneath of the end of the "tape so that Athe-taupe at this point will not engage and adhere to the drawing surface as the straight edge vils moved from one place'to another over the surface but a spacing insufhcient to permit play-:in that por;` tion 4of theutape between its areas of adherence so that the Yhieinber is heldagainst displacement when 'lines are drawn. "When not in use, the tacky 'strips may he folded against theobottom surface of the straight edge and adhered thereto so as to be out of the way. 1 t

\ Another object of `the `invention isa :stx-aient edge adapted to he attached at any anale of fine ciination on a drawing surfaceand at any point thereof for use in lettering in conjunction with a template such as is shown, for instance, in UnitedStates Patent No..2,0l1,l95, granted .to A. Wi Keufrei on August .13, 1935. *A scriber whereof the' angularrelation of its armsisreither adjustable 'as shown in the patent, or ilxed,las shown in United States Patent 2,050,058, granted to A.V W, Keuffel on August L4, 1 936, is directed over a surface to be written uponby a tracer pin'movingin character grooves in the template.

A different templateisusually provided for letters of different dimensions or inclinations to the vertical. i Another object ofthe present invention is a straight` ed `inrlrltlei roffthe chatcter dee l quickly a spacing of subsequent lines ofw letters "may be y yed'eterremedpy mhejdimensgons; l of thev staig t' *edge "or "reference vbaselines* an di` marks thereon. In carrying'this aspect of the invention into Veffect a transparent member of'f'f generally rectangular configuration is provided with reference marks or slots 4at different relative positions with respectt-itheedges of the member to indicate the extentflmovementf-necf;'4k

thev` essary and permit marks to be made on drawing surface at proper distances. .1i-i The inventionalso seeks a straight edgepf standpoint ofyeasepfmanufacture and conven-v ienceiandfdurability'inuse.*

'r VThese@.andOl'lllen objectsA of Yinvention yand Figu're 2: is a diagrammatic View.fshowingpthe mannexyinfwhich thefstraight `edgeis used to determinezthecposition of the template for al sec- Vondline of lettering;

-QFigureltis afragmentary view on van enlarged scale showing-one end of the template of .this

invention in. detail;- l Y e: Figure 4,is a viewin side elevation taken yin the f plane indicated by the linef4-I-4 of Figure 3 lookf fing: in'thegdirection ofthe arrowsand showing details oflconstructiongand f '1;3: Figure 5. isa fragmentary diagrammatic View,

similan to FigureZ, but showing a modification of the'invention. zizi' K Y f i- Referringrst to Figures `1 and 4,.the straight edge Bof;this'inventiongis illustrated as a rectangular: member 'having :upper .and `lower sur-` facesl :and 8,1 parallel-longer side edges I0 Vand the. character described which is practical from'the without dilculty and may be removed therefrom without damage to the material Vand after removal be in condition for readherence to a surface for a relatively unlimited number of times. Strips meeting the requirement of the adhesive strip of this invention are now offered for sale under such names as masking tapes or drafte vertical'dimension o 'the en lpate 2U is such that it causes the tape to engage the drawing surface at a point close to the end l2 of the l straight edge, thus preventing relative movement or play in the straight edge when it is fastened at bothends to a drawing surface by the adhesive strip. "Ilowfeverfthe edge 22 is spaced sufficiently above/'the plane'of the lower surface 8 as not to presslthe engaging tape portion at this point against the drawing surface and cause it to adhere. Thereby it is possible, when the strips 26 are disengaged from the drawing surface, ,to freely slide the straight edge fromwplaceto place over the :surface without ay tapeil portionf'sticking,u Zto the fr.drawing surfaceY and interfering .with the freemovementthereof.

lio

Ilv and ends l2, At least one of the side edges f.

IIL-@llzin' straight. ,To-the-end of ,thestraight edgezmember are attached what may be termed end rplavtes .I 4 consisting of two spaced arms I6 overlying the upper surface 'I vof the straight edge andse'cured thereto as by rivets or the like I 8. fir',

Integral with these armsl is a downwardly ex- .tending plane portion 20 having a rectilinear bottom'edgef22 disposed in spaced relationl to the end |2 of thestraight edge member to dei-lne a slot 2lst-andterminating` in a plane intermediate the upper and lower surfaces 1 and 8 `of the straight edge and at a sufllcientdistance above the-fplane of'the lower surface 8 to permit the passage lof a strip of normally tacky material 24'-"26 thereundeix The `end 24. of the strip 274-26 is releasably adhered to the upper surface '1 of: the straightedge member and passes downwardly between the vend I2 of the straight edge member andthe straight portion 20 of the` end I f s'ojlongfasgthe `adlfiesive surface remains tacky and may be adhered 'to paper or other material t When' the straightfedge-is"to, be removed or moved from one.,place to anotllenover the drawing surface, the VVadhesivest'rip canV be readily raised at one corner and separated` from the f drawing surface byV pullingttheftape in afdirec-` tion parallel to the surface of .thepapen Thereby therelis no tendencylto lift v the paper with 4thetape in removal. When completelyrremoved from the paper and vlaido ve`rf"the'top ,ofgfthe straight edge, no.,l portion of the .strip will engage the paper because of thelimited vertical dimension of the end plate and the straight edgecan then Vbe moved over thedrawing surface without difficulty-to another position ar1d readily fastened againin-position. g :Y a Y v y The use of astraight edge of this invention in conjunctiony with the 1 lettering' f devices of the patents is illustrated in-Figures 1 and 2. 'The location of the first line of lettering vat any inclination on Y the drawing surface is rstdecided upon and indicatedsay,fiby the line 30., {Ihe proper location of .the template must now beA ascertained in order that' letters may be formed along theV linei 3Q; withzuagscriber. As-will be understood, in order that -A letters `of different sizes, andV slanting as well asI vvertical letters, may be formed along the same line, the templates may conveniently all yabe so' proportioned ;that, when the tracer pin4l is atthebottom of a character groove. 31, :the distance l between .the :pen' point 32 of 'a'V given scriber (Figure 1) ,athen at the bottom of Aa line, of letteringg30, and the bottom edge' of'a template l341is, always theasamer This ognstant distance` is indicated at w in Figure 1. v' l'he straightV edge of this invention may conveniently be used asa guide o-r positioning `member1-for templates. Conveniently; the upper edgeof the straight edge is used "to position the template. Means arey therefore .desirable to positiongthe upper edgeuof thei straightedge at the .l proper when at the `bottom of a line of letteringfand the"mattonir edge orme template st 'indiatedby the line 1i.; es thejdistancel y'l-"fliisvf enables the top longer side'edge of thestrai'ght ed'fire'iV thelines 50 drawn throughitheslots 48. andthe;v

tering drawings; in those.;situations ywhere the;

usualL Trisquare for. affdrafting :machine is ,not

available.Furthermorethe straight edge forms;

a useful ,guidejfor 'letteringv in 1ines.angularly ref; lated' thehorizontal. .on maps; 'or inf otherV situ- ,ations zwhere only; a fewilines of `lettering are requiredf. in."I differenti kangularly related positions.. oversaz sheet. Theistraight edge particularly;

adaptedfor uselwithazscriber andtemplate since the ,-.p'roperi spacing'. offthefliries off lettering can readily`=l Vand accurately .Ibezz'det'ermined,v it being` understoodlitl'iat` ithe. principles :Lof .the straight,- edge be availedofafor- Eusefzwithrvany Isort of letterin'giguide :.us'ing anytypeiof lettering; device..

. zVariousmodifications. .willoccur to those skilledin the :art in: vthe composition; conguration and: dispositionfo thecomponent elements goingito makeup the 'iinventionaasfawhole. as wellas in. theisele'cti'or and .combinationiof particular features 1 for .specific i purposes. andV no llimitation is,- intendd'bythephraseology in the foregoing :de-v scriptin ror illustrations: in'l the accompanying drawingsx'cept ..as A:indicated j `in `the appended claimSLfZ-VQ,..,f'.,.'i' `r i I -f- Whatisclaimedis: A :7, Y..

1 1. A straight-iedge iomprising.V in combination,l a r`member having .atleastl-one straight edge and provided-fatit's"extremeends with slots, respectivclyfiiexible lnorrnally Vadhesive dstrips passing through the s1ots,f. respectively, and whereof an. end of- 'each is'adheredto the upper surface Aof the meinbenf the Iother ends of .the strips being i free; exteridingfaway fromandA beyond the respective thiclnes Qfltl tripsf-i'tfpsrmt.thief-Passage.l the respectivestrips for adherence to drawing ends ofthe-'straight edge for adherenceto a drawingsurfa'ce andbeing readily removed therefrom by'peelingfthe"stripfback from the drawing surfalce'. i iv l 292i *Ai straight edge ,comprisingg-in combination,` an elongated member having at least one straight edgand'forme'd at eachlend with av slot; and iieir'iblen'ormally adhesive strips whereof one end` isl'respe'ctivelyadhered to the upper vSurface 0f' the elongated member; said'strips passing-through the Vre"s`pective's1ots and whereof the free ends areadaptedto be removably adheredto asu-rface,` ithe material adjacent the remote sides of the slots terminating in spaced relation with-the planeA of the lowerl surface of the member a distance commensurate with the thickness of the stripfwhereby the member may slide over the drawingVA surface "when thestrips are disengaged from the drawing surface. *3.* A straight' edge comprising the combination with vari'rgelongated rectangular member, of end plates respectively Vformed with spaced portions securedlto one surface of the-memberand havinga transversely disposed portion in spaced relation with the ends of thegrnember to dene .therewithL slotsffor the reception of liexible adhesive strips! adaptedto be adheredrto'the upper surfacebf;

therectangular member and tol passfthroughthe slots respectively to extend away-from the endsof the l:member foradherence-to-a drawing surface. and be, readily;` removed therefrom i by'l peeling baci; the free. ends-of theY strips from thedrawin Surface- Q -4- 1A..trais`fitedafzmprisingthe Caminata Wuhan elongated rectangular.'mailbag-enable@ respectively formedI with spaced Drtions'seuredtoonesurface of the memberand havingyrespecltive1y,g.transversely disposed ,portions in.l spaced` relation with the. lends. ofglthemember t()fd'ein'ev therewithV Vslots and Y flexible 'adhesive Ystrips .adi bawdy@ the @mpeg Surfae fof "th rectangular memberand passingthrough the; slots, respec tively,v said. ytransversely disraised., DOtions yterniif nating .above fthe plane of ,the othrsurfa themember'a distance commensurate wit surface ,and the member-f to slide over the drawlfz ing; surface when the strips are disengaged th` re straight. edgefcomprising, in Vcombinay on,l

5. an elongated rectangular member, clciivriwlardly; curvedend plates formed with 'earsdoverlyin upper surface of the end portions of thefrmenibr and secured Ythereto :to dene slots, respectivelyI and ribbons provided onl their respective lowerj faces (with normally adhesive materiall and'wherei;

of oneend overlies and is adhered tdthc'e uppersurface of therespective'e'nd portions and wherel! ofv intermediate `p oiticms of the", /ri bbons (pass throughfthe respective slotsv and b'enzeaththe: edgefof thelend plate toprovde freeY endsvexr`r tending in 4"prolo'ngato'n of Vthe member-Tand adapted' to beiemovabiy adhered;tpjajdrawifrg: surface. y Ziff.; 6. A'st'raight' edge comprising, inbmbiiatin, aV transparent elongated" rectangular v,me'mbe'r downwardly curvedA endplates formed with overlying Vthefupper surface of the "entd`pfr of the member andsecured thereto tden'i ot's'.; respectively,vwith the ends of said m'errib'enfa d" ribbons whereof the lower faces are normallyadl hesive and one- 4endo'verlies4 andisfadhered lto the upper surface of saidy respective end pjcirtins and,v whereof an4 intermediate y portionf. passes through the respective slots and beneath-,the rerspective edges of vthe endplates'to be removably' adheredwto a drawing surface,v the lverticaldimensionof the end` plates being such that the'l ribbons are-caused to engage the drav'ving'sur`` face `close kto the ends of the straight edge wheres.' Y by relative movement of the straight. edge. is. prevented. 

